What this MCCB carries and where it fits
The Siemens 3VA2116-5JQ32-0DA0 is a 3-pole SENTRON molded case circuit breaker rated for 160 A continuous current at 40 °C, with an ETU560 electronic trip unit configured for line protection. Its interrupting capacity reaches 187 kA at 240 V AC and 121 kA at both 415 V and 440 V — figures that put it squarely in high-fault-duty distribution, not just branch protection. At 500 V it still holds 79 kA, and at 690 V it drops to 4.25 kA, so the application voltage governs the SCCR you can claim on the panel label.
Current derating — the real continuous rating at your ambient
The 160 A rating holds from 40 °C through 50 °C. At 55 °C it derates to 154 A, at 60 °C to 148 A, at 65 °C to 142 A, and at 70 °C to 136 A. If your panel ambient runs above 50 °C, the continuous load must be sized against the derated value, not the nameplate 160 A. The maximum power loss is 28 W, which matters for enclosure heat rise calculations in a sealed cabinet.
Built-in undervoltage release and communication
This variant includes an undervoltage release (UVR) — design designation 3VA9608-0BB25 — and a communication function, so it can be integrated into a higher-level monitoring or shutdown scheme without adding an external relay. The overcurrent release is the ETU560, a programmable electronic trip unit that supports adjustable pickup and delay settings for selectivity coordination. There is no auxiliary contact version on this order code, so if you need a remote status signal, plan for an external auxiliary switch block.
Mounting dimensions and panel fit
The breaker measures 105 mm wide, 181 mm high, and 86 mm deep. That 105 mm width is a standard 3-pole MCCB footprint for this current class — it fits the same panel cutout and bus-bar spacing as other SENTRON 3VA2 frame breakers. The 86 mm depth includes the arc chamber and termination area; verify clearance for the undervoltage release wiring and communication cable routing behind the panel gland plate.